This rubber cord manager comes in multiple colors: single-packs ($5) include one Core, and triple-packs ($13) include three. Black, pink, blue, and clear frosted versions are available, each with the ability to wrap your iPod's headphone cord around a thin base and pull the ends out at the Core's center.

Editors' Note: iLounge only reviews products in "final" form, but many companies now change their offerings - sometimes several times - after our reviews have been published.
This iLounge article provides more information on this practice, known as revving.